1. Pediatric Emergency Department Department of Pediatrics, Inselspital Bern University Hospital University of Bern Bern Switzerland
2. Department of Pediatrics, Inselspital Bern University Hospital University of Bern Bern Switzerland
3. Pediatric Emergency Department Astrid Lindgren Children's Hospital Karolinska University Hospital Stockholm Sweden
4. Karolinska Institutet Department of Women's and Children's HealthStockholm Sweden